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Journal Article

Dissociative recombination of electrons with diatomic molecular cations above dissociation threshold: Application to H2+ and HD+

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http://pubman.mpdl.mpg.de/cone/persons/resource/persons31190

Wolf,  Andreas
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Citation

Chakrabarti, K., Backodissa-Kiminou, D. R., Pop, N., Mezei, J. Z., Motapon, O., Lique, F., et al. (2013). Dissociative recombination of electrons with diatomic molecular cations above dissociation threshold: Application to H2+ and HD+. Physical Review A, 87(2): 022702, pp. 1-10. doi:10.1103/PhysRevA.87.022702.


Cite as: http://hdl.handle.net/11858/00-001M-0000-000E-B353-F
Abstract
Our approach to the dissociative recombination and competitive processes based on the multichannel quantum defect theory is extended to the full account of the dissociative excitation, including the electronic excitation of the molecular ion. Compared to other existing modelings, ours relies on a simpler and less-time-consuming discretization of the vibrational continua of the target ion and to a more accurate account of the Rydberg-valence interactions via a second-order solution of the Lippman-Schwinger equation. A thorough study of the competition among the dissociative recombination, vibrational excitation, and dissociative excitation is performed, including a detailed analysis of the two different mechanisms governing the ion dissociation. The application of our method to the high-energy electron collisions with H2+ and HD+ ions results in a cross section in good agreement with the best previous modeling and with the most recent measurements performed in the Test Storage Ring of the Max-Planck-Institut für Kernphysik in Heidelberg.